Ether

Ethereum has also suffered from scalability issues since its inception and is capable of handling just 14 transactions per second, compared to Visa’s 24,000 per second, causing network congestion, writes Fran Strajnar, CEO of Brave New Coin.

Much of the excitement revolves around the development of scaling solutions that may enable Bitcoin, Ethereum, and other blockchains to reach a truly global user base, writes Nick Spanos,founder of the Bitcoin Center.